Hello Geoff.

>> I have a combo in a grid (work order items) and I want to display a list of people to allocate that work item to based on on a work category on the product record. Each line item can potentially have a different work category and so I need a list that is dynamic. <<

Merry Christmas!

The easiest way to do what you want is to set up a parameterized view to use as the RowSource of the combo and set up the combo with a RowSourceType of 6-Fields. Code like this in the GotFocus() of the combo:

LOCAL lcGridAlias, vp_cl_key
DODEFAULT()
WITH This
  *** Requery the locations view to obtain all the locations for
  *** The client displayed in the current grid row
  lcGridAlias = This..Parent.Parent.RecordSource
  vp_cl_Key = &lcGridAlias..Cl_Key
  REQUERY( 'lv_location' ) 
  *** Refresh the combo  
  .Requery()
  .Refresh()                
ENDWITH	

Nothing else should be required.